this post was submitted on 19 Mar 2026
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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That is a runtime that some flatpaks use as well.
Gnome and KDE as projects are a bunch of things, from login managers, to compositers, desktop UIs, and user application (like Gnome "System Monitor" or KDEs "Plasma System Monitor").
You can actually mix and match some pieces and they just work, but especially the user apps because both teams put in work for interoperabilty or Freedesktop standarization.
So you can have an app that uses KDEs shared libs and an app that uses the Gnome projects libs on the same issue with rarely any issue. Even more so with flatpak since the all of the files those apps see are in what is called an overlay filesystem, so your kde apps get a layer of files jist for KDE apps to build off of and gnome apps get a layer of files just for them to use. In flatpak these are called runtimes. That is what is being updated here.
Oh, I see; well, thank you for the detailed explanation! So it's nothing weird, after all
No problem!
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